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https://issues.apache.org/jira/browse/YARN-7936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16436224#comment-16436224
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Hudson commented on YARN-7936:
------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13987 (See 
[https://builds.apache.org/job/Hadoop-trunk-Commit/13987/])
YARN-7936. Add default service AM Xmx. Contributed by Jian He (billie: rev 
53b3e594732e7a567dda4e08b9a8af5f87a4472a)
* (edit) 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/client/ServiceClient.java
* (edit) 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/conf/YarnServiceConf.java


> Add default service AM Xmx
> --------------------------
>
>                 Key: YARN-7936
>                 URL: https://issues.apache.org/jira/browse/YARN-7936
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jian He
>            Assignee: Jian He
>            Priority: Major
>         Attachments: YARN-7936.1.patch
>
>
> We were seeing issues in the Service AM where memory usage would go beyond 
> 1gb and AM container would get killed due to pmem check. We were not setting 
> Xmx explicitly and hence it was getting defaulted to 32gb (based on the java 
> version we were using and the available memory in the host). Hence even minor 
> GC cycles were not kicking in and taking the usage beyond 1gb.
> We need to default Xmx to a reasonable value, ofcourse allowing it to be 
> overridden by the service owner.



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